Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 0), (-1, 1, 1), (1, 0, 1), (1, 1, 0)}.
A150387
Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 0), (-1, 1, 1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =100a(5) =368a(6) =1710a(7) =6716a(8) =31823a(9) =130061a(10) =623003a(11) =2611508a(12) =12616721a(13) =53820289a(14) =261699739a(15) =1131097502a(16) =5525211564a(17) =24129146559a(18) =118255755796a(19) =520778209686
External references
- oeis: A150387